They appear as horseshoe-shaped or kidney-shaped mounds, typically beside a water source, and are thought to date largely from the Bronze Age. The name translates roughly as "wild deer cooking place", though what exactly went on at them has been debated for decades. The leading theory holds that they were ancient cooking sites: a trough dug into the ground would be filled with water, then heated stones dropped in to bring it to boiling point. The shattered, fire-cracked stones were tossed aside over time, building up into the low mounds that survive today. One such site sits at Coom in County Kerry, quietly occupying its place in a landscape already shaped by mountain, bog, and an unusually remote geography.

Coom, a valley settlement tucked into the Caha Mountains near the Cork and Kerry border, is not a place that draws much passing traffic. The presence of a fulacht fia here speaks to a Bronze Age population that moved through and worked these upland margins long before the area acquired its modern quietness. Fulachtaí fia tend to cluster near streams or marshy ground, which would have provided the water necessary for their operation, and the wet, boggy terrain of a mountain valley like Coom would have been well suited to their use. Thousands of these sites have been recorded across Ireland, particularly in Munster, making them a defining feature of the Bronze Age presence in the southern provinces, yet individual examples often receive little attention compared to more visually dramatic monuments.